Gestational Age Calculator
Gestational Age Calculator: Use our professional-grade medical tool to calculate complex results accurately and instantly. Fast, secure, and 100% free onli
Medical Disclaimer
This tool is for educational purposes only and should not be used for diagnostic or clinical decision-making. Always consult a qualified healthcare professional before making medical decisions.
Clinical Reference Only
Gestational Age Calculator
Determine your current pregnancy stage and estimated due date (EDD).
Gestational Age
4w 0d
First Trimester
Due Date (EDD)
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Remaining Time
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Pregnancy Milestone
How to Use This Tool in 3 Steps
1
Select Method
Choose whether you are dating by LMP (Last Period] or a specific Ultrasound scan.
2
Enter Dates
Input the relevant date and, if using ultrasound, the weeks/days reported on the scan.
3
See Progress
Get your exact pregnancy duration in weeks and days plus your Estimated Due Date (EDD].
Frequently Asked Questions
If you aren't sure of your last period date, an early ultrasound is the best way to determine your gestational age. Use the "Ultrasound" method in our tool once you have your scan results.
The 40-week count begins on the first day of your last period, meaning you aren't actually pregnant for the first ~2 weeks. Fetal development actually lasts about 38 weeks.
Your doctor might adjust your due date if a first-trimester ultrasound shows the baby is significantly larger or smaller than LMP dates suggest.